CC-3357: Upgrade script to 2.0.2 doesn't work

- It was deleting /user/lib/airtime after it installs virtualenv. rm comand is
ran before anything.

install_minimal/airtime-install

@@ -155,9 +155,8 @@ export python_service=$?
 set -e
 
 echo -e "\n******************************** Install Begin *********************************"
-
+rm -rf "/usr/lib/airtime"
 if [ "$python_service" -eq "0" ]; then
-    rm -rf "/usr/lib/airtime"
     $AIRTIMEROOT/python_apps/python-virtualenv/virtualenv-install.sh
 
     virtualenv_bin="/usr/lib/airtime/airtime_virtualenv/bin/"

install_minimal/include/airtime-copy-files.sh

@@ -53,7 +53,6 @@ MIN=$(($RANDOM%60))
 echo "$MIN $HOUR * * * root /usr/lib/airtime/utils/phone_home_stat" > /etc/cron.d/airtime-crons
 
 echo "* Creating /usr/lib/airtime"
-rm -rf "/usr/lib/airtime"
 if [ "$python_service" -eq "0" ]; then
     python $AIRTIMEROOT/python_apps/api_clients/install/api_client_install.py